OAKLAND — If you’re flying out of Oakland International Airport for your summer vacation, you’d better arrive at least an hour and a half before departure, more than 300 inconvenienced travelers learned Monday morning.

Lines stretched about 150 people long in two directions on the sidewalk outside Southwest Airlines passenger check-in thanks to construction, Monday business travel and summer travel. Some travelers said they waited an hour in line, and some said they missed their flights.

“We are adding new passenger check-in counters at Southwest that will be completed in the next couple of weeks,” said Rosemary Barnes, spokeswoman for the airport. This and other construction “reduced the number of square feet we can put bodies in,” and resulted in the long sidewalk lines, she said.

Construction is also going on in the parking lot areas and areas close to the airport itself, making for “a challenging summer,” Barnes acknowledged.

“My husband pushed me to come early and I’m glad now,” said Tricia Chandler of Windsor, waiting for an Oregon flight with husband Kevin Chandler around 10 a.m. Monday. “Our flight leaves at 12:10, and we’re going to make it.”

Others were not as lucky. Antonia Garcia, who came to California for the first communion of relative Felipe Zaragoza of Richmond, said her son David Garcia missed his flight because of the lines.

The seven adult children of David and Louise Turpin, the couple accused of abusing and imprisoning them for years at their Perris home, have been released from the hospital, their attorney said Monday.

The law and responding challenge set up a confrontation sought by abortion opponents, who are hoping federal courts will ultimately prohibit abortions before a fetus is viable. Current federal law does not.